Safety device for gasoline filling stations



Dec. 25, 1928. 1,696,540

N. A. cARLsoN SAFETY DEVICE FOR GASOLINE FILLING STATIONS Filed Aug. 6, 1927 A TTORNEYS.

Patented Dec. 25, 1928.

, UNITED STATES PATENT OFFICE.

NELSON A. CABLSON, OF ERIE, PENNSYLVANIA, ASSIGNOR T ERIE METER SYSTEMS,

INC., 01 ERIE, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

SAFETY DEVICE FOR GASOLINE FILLING STATIONS.

Application filed August 6-, 1927. Serial No. 211,175.

I Very serious accidents have occurred at gasoline filling stations through fires which -have developed so'rapidly immediately at the dispensing points as to prevent the closing off of the discharging gasoline. The present invention is designed to respond automatically to the variation of temperature due to fire so as to close off the gasoline supply. Features and details of the invention 1o will appear from the specification and claims. I A preferred exemplification of the invention' is illustrated in the accompanying drawings as follows Fig. 1 shows a front elevation of the device.

Fig. 2 a sectional view of the self-closing valve, for closing off the flow of gasoline, the section being on the line 2-2 in Figs. 3 and 5.

Fig. 3 a section on the line 3-3 in Fig. 2.

Fig. 4 an end view of the valve head.

Fig. a plan view of the valve.

1 marks the stand carrying the meter, an ordinary control apparatus for normal use, l a dispensing hose, 2 a meter, 3 a supply pipe leading to the meter and from the meter to the hose, and 4 a self-closing valve, this valve having a discharge end 5 connecting with the pipe 3 and an inlet end 6 connecting with a supply pipe 7 leading from a source of supply under pressure.

The valve body is provided with a valve seat 8 on which operates a valve head 9 which is adapted to close the passage through the valve. Guide extensions 9 are arranged on the head and operate in the valve bodyto guide the valve as it-is opened. The valve is closed by a spring 10 as well as the general tendency of the valve to close under the pressure of the flowing gasoline. I

An extension 11 projects from the valve head. This is provided with a slot 12 into which extends an arm 13. The arm 13 is mounted on a squared portion 14 of a stem 15.

The stem extends through a stufling bdx 16' and a handle 17 is pivotally secured to the end of the stem.

A fusible. link 18 is secured by a screw 19 on a boss 20, the boss extending from the body of the valve. The link is provided with a squared end 21 which is adapted to engage the handle 17 and thus lock the valve in an open position.

The handle as shown in Figs.

1 and 5 is in position to open the valve, while the arm 13 as shown in Fig. 2 indicates this part as in closed position. The pivotal connection of the handle permits of the swinging of the handle past the hook to permit the manual operation of the valve if desired and the resetting of the handle back of the link when the valve is opened.

It will be observed that when this device is subjected to the temperature incident to fire in its immediate neighborhood the fusible link is fused releasing the self-closing valve and it immediately closes.

What I claim as new is 1. In a safety device for gasoline filling stations, the combination of a conduit; a selfclosing valve in the conduit comprising a body, a valve seat in the body, an arm operating to open the valve,'a stem on the arm ex tending to without the body, and a handle pivotally mounted on the stem, the axis of the pivot being crosswise of the stem; and a fusible link having a shoulder engaging the handle and locking the valve in open position, the handle being free to swing on its axis clear of the shoulder.

my hand.

NELSQN A. CARLSON. 

